2014 study in Public Opinion Quarterly that suggests that political polarization cannot be explained by media diversity and the fragmenting of audiences.
2014 metastudy from the RAND Corporation of correctional-education programs in the United States, summarizing their main achievements and the challenges they face.
2014 selection of research on the impact of wage levels and gifts on employee morale and productivity, both of affected workers and others.
2014 selection of studies and papers on the relationship between crime and properties values. Includes research on the United States and internationally.
Updated in 2014, this review of literature on the effectiveness of surveillance cameras against crime includes a 2009 meta-analysis by Northeastern and the University of Cambridge.